Question * An automotive repair shop has determined that the average service time on an automobile is 130 minutes with a standard deviation of 26 minutes. What is the probability that the sample of 100 automotive services will have a mean service time at least 124.54 minutes but less than 135.98 minutes?

Q: What's the standard deviation for the sample data set to 2 decimal places {6.65,10.82,15.83,20.76}

A: It is an important part of statistics. It is widely used.

Q: There is a 4% chance that smokers will have a mean pregnancy length of 266 days.  is it valid or…

A: Null and alternative hypotheses: The null and alternative hypotheses are as follows:

Q: Hospital waiting room times are normally distributed with a mean of 38.12 minutes and a standard…

A: From the provided information, Mean (µ) = 38.12 minutes Standard deviation (σ) = 8.63 minutes X~N…

Q: The number of orders received daily by an online vendor of used CDs is normally distributed with…

A: The provided information is  µ=210 σ=20 P(X≥246)…

Q: The retirement age of National Football League (NFL) players is Normally distributed with a mean of…

A: Consider that the mean and standard deviation of a random variable X are µ and σ, respectively.…

Q: In a random sample of 23 private school teachers in queens county the average teaching experience is…

A:

Q: According to a sports report, the time of finishers covering a certain distance is normally…

A: Solution: Let X be the time of finishers covering a certain distance. From the given information, X…

Q: The number of orders received daily by an online vendor of used CDs is normally distributed with…

A: Given that.   X~N( μ , ?^2 )   μ=210     , ?=16   Z-score =( x - μ )/?

Q: Fluorescent lightbulbs have lifetimes that follow a normal distribution, with an average life of…

A: Solution: From the given information, σ=1,612 hours and n=332.

Q: The mean age that cats get adopted at a shelter is 21.4 months with a standard deviation of 3.6…

A: Normal distribution is also known as the Gaussian distribution . It is widely used in statistics .

Q: Suppose the number of Covax and Pfizer vaccine bought by the Philippine government are normally…

A: Let, X=the number of vaccine μ =mean σ = sd

Q: The number of cell phone minutes per month used by a collage student follows a normal distribution…

A: To solve this problem, we first need to standardize the given values using the standard normal…

Q: The lifetime of lightbulbs that are advertised to last for 3500 hours are normally distributed with…

A:

Q: What is the standard deviation of the following: 23, 41, 22, 37, 48, 36?

A: We have given the data set and we have to find standard deviation. Now, Now, variance-

Q: Suppose that IQ scores have a bell-shaped distribution with a mean of 103103 and a standard…

A: The percentage of IQ scores at least 58 is approximately 32%.Explanation:The empirical rule (also…

Q: The mean age that cats get adopted at a shelter is 21.4 months with a standard deviation of 3.6…

A: Solution: Let X be the age. From the given information, X follows normal distribution with mean…

Q: Traveling between University of Santo Tomas and Rizal Park, Manila via shuttle bus takes, on…

A: Given that, μ=28,σ=5 and n=40 The mean and standard deviation of the sample mean is,

Q: Traveling between University of Santo Tomas and Rizal Park, Manila via shuttle bus takes, on…

A: Solution: Let X be the transport time. From the given information, X has mean µ=28 minutes and a…

Q: scores are used as part of the admissions process for more than 60006000 graduate management…

A: *1 As Given:-   The null and alternative hypotheses are ?0:?=563 versus ??:?<563.…

Q: What is the standard deviation of 2,3,3,4,6,7,8,8,9,10

A: The question is about measures Given : Data :   To find : Value of std. deviation

Q: The incubation time for Rhode Island Red chicks is normally distributed with mean of 22 days and…

A: From the provided information, Mean (µ) = 22 Standard deviation (σ) = 3 Sample size (n) = 1000

Q: What is the Population standard deviation of 4,7,9,2,3?

A:

Q: The number of pizzas consumed per month by university students is normally distributed with a mean…

A: Let "X" be the number of pizzas per month by university students. Draw the normal curve and shade…

Q: Response time is an important statistic for measuring the effectiveness of a fire department, and is…

A: Given data,Mean μ=4.5sd σ=1.2P(4<X<6)=?

Q: 5. In 2018, the braking distance of Toyota Camry cars on a wet surface follows a normal…

A: Let,        X = braking distance of the Toyota Camry cars    Then, X ~ N(122, 20)  Then, let, Z = (X…

Q: The weight of large bags of one brand of potato chipsis a random variable with a mean of 18 ounces…

A: In descriptive statistics, there are measures which are required for the distribution to be used on…

Q: What is the standard deviation of 1,1,1,2,3,3,

A: It is given that the sample 1,1,1,2,3,3,3

Q: The composite scores of individual students on the ACT college entrance examination in 2019 followed…

A: Solution: Let X be the composite scores of individual students on the ACT college entrance…

Q: What is the probability of a homeless having a score below 25? Mean = 26.8 Standard deviation= 7.4

A:

Q: The SAT is an exam that is used by many universities for admission. Suppose that the scores on the…

A: Solution: Let X be the score on SAT mathematics exam. From the given information, X follows normal…

Q: Assume the average amount of caffeine consumed daily by adults is normally distributed with a mean…

A: The detailed solution is as follows below:

Q: The mean time spent solving a problem is 4.25 minutes with a standard deviation of 1.7 minutes. Find…

A: Mean = 4.25 Standard deviation = 1.7 Sample size, n = 32

Q: What is the probability of a homeless having a score between 20 and 25? Mean= 26.8 Standard…

A:

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.